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POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2020 Physics | Objective

Prepare for your exams with POST UTME JOSEPH AYO BABALOLA UNIVERSITY questions? Reviewing past/model questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2020 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1 View Details

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?

A. 6 m/s^2

Correct B. 12 m/s^2

C. 18 m/s^2

D. 24 m/s^2

Correct Answer: B

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Question 2 View Details

A 10 μF capacitor is connected in series with a 20 Ω resistor and a 5 V battery. What is the current flowing through the circuit?

Correct A. 0.25 A

B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: A

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Question 3 View Details

A wave has a frequency of 50 Hz and a wavelength of 0.2 m. What is the speed of the wave?

A. 10 m/s

Correct B. 20 m/s

C. 30 m/s

D. 40 m/s

Correct Answer: B

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Question 4 View Details

A body of mass 5 kg is moving with a velocity of 10 m/s. If the body is subjected to a force of 20 N, what is the acceleration of the body?

A. 2 m/s^2

B. 4 m/s^2

C. 6 m/s^2

Correct D. 8 m/s^2

Correct Answer: D

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Question 5 View Details

A 100 μF capacitor is connected in parallel with a 200 μF capacitor. What is the equivalent capaci\tance of the circuit?

A. 100 μF

B. 200 μF

Correct C. 300 μF

D. 400 μF

Correct Answer: C

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Question 6 View Details

A. 2 m/s^2

B. 4 m/s^2

Correct C. 6 m/s^2

D. 8 m/s^2

Correct Answer: C

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Question 7 View Details

A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 12 V. If the dis\tance between the plates is doubled, what is the new potential difference?

A. 6 V

B. 8 V

C. 10 V

Correct D. 12 V

Correct Answer: D

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Question 8 View Details

A lens of focal length 20 cm is used to form an image of an object placed 30 cm away from the lens. If the object is moved to a dis\tance of 60 cm from the lens, what is the new image dis\tance?

A. 10 cm

B. 20 cm

Correct C. 30 cm

D. 40 cm

Correct Answer: C

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Question 9 View Details

A radioactive sample has a half-life of 10 years. If the initial activity is 100 Bq, what is the activity after 20 years?

A. 12.5 Bq

Correct B. 25 Bq

C. 50 Bq

D. 100 Bq

Correct Answer: B

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Question 10 View Details

A circuit consists of a 12 Ω resistor, a 20 Ω resistor, and a 10 Ω resistor connected in series. If a voltage of 24 V is applied across the circuit, what is the current flowing through the circuit?

A. 0.5 A

B. 1 A

C. 1.5 A

Correct D. 2 A

Correct Answer: D

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Question 11 View Details

A parallel plate capacitor has a capaci\tance of 2.5 μF. If a potential difference of 10 V is applied across the plates, what is the charge stored on each plate?

Correct A. 25 μC

B. 50 μC

C. 100 μC

D. 200 μC

Correct Answer: A

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Question 12 View Details

A particle of mass 0.5 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, what is its angular frequency?

A. 10 rad/s

B. 20 rad/s

Correct C. 40 rad/s

D. 50 rad/s

Correct Answer: C

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Question 13 View Details

A gas occupies a volume of 2.5 L at a pressure of 1.5 atm. If the pressure is increased to 3 atm, what is the new volume of the gas?

A. 1 L

Correct B. 1.25 L

C. 1.5 L

D. 2 L

Correct Answer: B

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Question 14 View Details

A magnetic field of 0.5 T is applied to a coil of 100 turns and a radius of 0.2 m. If the current in the coil is 2 A, what is the torque experienced by the coil?

Correct A. 10 π Nm

B. 20 π Nm

C. 30 π Nm

D. 40 π Nm

Correct Answer: A

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Question 15 View Details

A ray of light passes through a prism with an angle of re\fraction of 30° and an angle of incidence of 20°. What is the angle of emergence?

A. 40°

Correct B. 50°

C. 60°

D. 70°

Correct Answer: B

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